I've never had any issues with the GW glue, what is the problem you are having with it? Is it just not sticking? Try looking for polycement on amazon, its like plastic glue on steroids as it effectively melts the plastic at the join to fuse the two parts together, be careful not to get it on other bits of the model and make sure its fully dry before cleaning up excess around the joint.
Me: To be honest im amazed there isn't a chaos god of not revising or at least chaos god of procrastination
MidnightSun: There will be, when enough people do it. Y'know when the Eldar were all engaging in their hedonism and Slaanesh ripped open the Eye of Terror with his creation? Slaanesh will have NOTHING on the God of Procrastination, and his vile minions will carve the galaxy asunder in a thousand year reign of blood.... Tomorrow